diff options
| author |   Neale Ranns <nranns@cisco.com> | 2017-03-01 15:12:11 -0800 |
|---|---|---|
| committer | Neale Ranns <nranns@cisco.com> | 2017-04-07 09:12:12 +0000 |
| commit | 0f26c5a0138ac86d7ebd197c31a09d8d624c35fe (patch) | |
| tree | 5cee4659885432c439e44d7346fd5e482df5f0e6 /src/vnet/fib/fib_entry.h | |
| parent | c14f31c2c62fb66d98aef4402a6f1bda09683fd3 (diff) | |
MPLS Mcast
1 - interface-DPO
Used in the Data-plane to change a packet's input interface
2 - MPLS multicast FIB entry
Same as a unicast entry but it links to a replicate not a load-balance DPO
3 - Multicast MPLS tunnel
Update MPLS tunnels to use a FIB path-list to describe the endpoint[s]. Use the path-list to generate the forwarding chain (DPOs) to link to .
4 - Resolve a path via a local label (of an mLDP LSP)
For IP multicast entries to use an LSP in the replication list, we need to decribe the 'resolve-via-label' where the label is that of a multicast LSP.
5 - MPLS disposition path sets RPF-ID
For a interface-less LSP (i.e. mLDP not RSVP-TE) at the tail of the LSP we still need to perform an RPF check. An MPLS disposition DPO performs the MPLS pop validation checks and sets the RPF-ID in the packet.
6 - RPF check with per-entry RPF-ID
An RPF-ID is used instead of a real interface SW if index in the case the IP traffic arrives from an LSP that does not have an associated interface.
Change-Id: Ib92e177be919147bafeb599729abf3d1abc2f4b3
Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/fib/fib_entry.h')
| -rw-r--r-- | src/vnet/fib/fib_entry.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/src/vnet/fib/fib_entry.h b/src/vnet/fib/fib_entry.h index a3f75e6084a..b17a0b6444c 100644 --- a/src/vnet/fib/fib_entry.h +++ b/src/vnet/fib/fib_entry.h @@ -193,6 +193,11 @@ typedef enum fib_entry_attribute_t_ { */ FIB_ENTRY_ATTRIBUTE_LOCAL, /** + * The prefix/address is a multicast prefix. + * this aplies only to MPLS. IP multicast is handled by mfib + */ + FIB_ENTRY_ATTRIBUTE_MULTICAST, + /** * The prefix/address exempted from loose uRPF check * To be used with caution */ @@ -200,7 +205,7 @@ typedef enum fib_entry_attribute_t_ { /** * Marker. add new entries before this one. */ - FIB_ENTRY_ATTRIBUTE_LAST = FIB_ENTRY_ATTRIBUTE_URPF_EXEMPT, + FIB_ENTRY_ATTRIBUTE_LAST = FIB_ENTRY_ATTRIBUTE_MULTICAST, } fib_entry_attribute_t; /** @@ -215,7 +220,8 @@ typedef enum fib_entry_attribute_t_ { [FIB_ENTRY_ATTRIBUTE_DROP] = "drop", \ [FIB_ENTRY_ATTRIBUTE_EXCLUSIVE] = "exclusive", \ [FIB_ENTRY_ATTRIBUTE_LOCAL] = "local", \ - [FIB_ENTRY_ATTRIBUTE_URPF_EXEMPT] = "uRPF-exempt" \ + [FIB_ENTRY_ATTRIBUTE_URPF_EXEMPT] = "uRPF-exempt", \ + [FIB_ENTRY_ATTRIBUTE_MULTICAST] = "multicast", \ } #define FOR_EACH_FIB_ATTRIBUTE(_item) \ @@ -232,6 +238,7 @@ typedef enum fib_entry_flag_t_ { FIB_ENTRY_FLAG_LOCAL = (1 << FIB_ENTRY_ATTRIBUTE_LOCAL), FIB_ENTRY_FLAG_IMPORT = (1 << FIB_ENTRY_ATTRIBUTE_IMPORT), FIB_ENTRY_FLAG_LOOSE_URPF_EXEMPT = (1 << FIB_ENTRY_ATTRIBUTE_URPF_EXEMPT), + FIB_ENTRY_FLAG_MULTICAST = (1 << FIB_ENTRY_ATTRIBUTE_MULTICAST), } __attribute__((packed)) fib_entry_flag_t; /** @@ -396,7 +403,7 @@ typedef struct fib_entry_t_ { * paint the header straight on without the need to check the packet * type to derive the EOS bit value. */ - dpo_id_t fe_lb; // [FIB_FORW_CHAIN_MPLS_NUM]; + dpo_id_t fe_lb; /** * Vector of source infos. * Most entries will only have 1 source. So we optimise for memory usage, |